In animals which of the following body systems delivers nutrients and oxygen to cells
a. digestive system
b. respiratory system
c. excretory system
d. circulatory system

D. circulatory system
that is the answer.
The open circulatory system is found in arthropods and mollusks. The body cavity of these animals is called a hemocoel. The heart pumps a blood-like substance directly into the hemocoel where it moves freely and the organs are able to directly access the nutrients. In the hemocoel, blood and interstitial fluid (a special fluid which surrounds cells) is combined into a substance called hemolyph. This is the goo which sometimes squishes out of bugs when they get stepped on. 

Volcanoes make new rocks so not ahotspots are the the stuff that makes volcanoes mid atlantic ridge(mar cause i’m lazy) is a constructive plate boundary so it makes sense that new rocks would be found near it, also the mar is in the middle of the ocean so it fits the description deep ocean trench, umm, there’s no ocean trenches to where you’re goingso the mar is most likely the answeri wouldn’t trust me but hey why not